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Architecture explainers of public companies and systems. Request paths, data stores, failure domains — grounded in public sources, with mermaid diagrams.

GitHub Handles Git Repositories at ScaleA grounded explainer of GitHub Handles Git Repositories at Scale from public sources. Covers the request path, failure domains, and what public documentation2026-10-3117 minOpenAI Serves LLM Inference at ScaleA grounded explainer of OpenAI Serves LLM Inference at Scale from public sources. Covers the request path, failure domains, and what public documentation2026-10-3013 minCAP Theorem in Real Production SystemsA grounded explainer of CAP Theorem in Real Production Systems from public sources. Covers the request path, failure domains, and what public documentation2026-10-2911 minYouTube Recommendations Work: Inside the System That Powers Billions of Video SuggestionsA grounded explainer of YouTube Recommendations Work from public sources. Covers the request path, failure domains, and what public documentation actually2026-10-2811 minWhy Cloud Control Planes Differ From Data Planes: An Architecture TeardownA grounded explainer of Cloud Control Planes Differ From Data Planes: from public sources. Covers the request path, failure domains, and what public2026-10-2713 minHow CDNs Decide Where to Serve a RequestA sourced look at how CDNs choose an edge location: Anycast, GeoDNS, cache lookup, and why the nearest data center is not always the fastest.2026-10-266 min

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